<template>
  <div>
    <!-- Header 区域 -->
    <van-nav-bar
      fixed
      title="文章详情"
      left-arrow
      @click-left="$router.back()"
    />

    <!-- 文章信息区域 -->
    <div class="article-container">
      <!-- 文章标题 -->
      <h1 class="art-title">{{ artObj.title }}</h1>

      <!-- 用户信息 -->
      <van-cell
        center
        :title="artObj.aut_name"
        :label="formTimeAgoFn(artObj.pubdate)"
      >
        <template #icon>
          <img :src="artObj.aut_photo" alt="avatar" class="avatar" />
        </template>
        <template #default>
          <div>
            <van-button
              v-if="artObj.is_followed"
              type="info"
              size="mini"
              @click="followDrunFn(true)"
              >已关注</van-button
            >
            <van-button
              v-else
              icon="plus"
              type="info"
              size="mini"
              plain
              @click="followDrunFn(false)"
              >关注</van-button
            >
          </div>
        </template>
      </van-cell>

      <!-- 分割线 -->
      <van-divider></van-divider>

      <!-- 文章内容 -->
      <div class="art-content" v-html="artObj.content">好好学习, 天天向上</div>

      <!-- 分割线 -->
      <van-divider>End</van-divider>

      <!-- 点赞 -->
      <div class="like-box" id="like-box">
        <van-button
          v-if="artObj.attitude === 1"
          icon="good-job"
          type="danger"
          size="small"
          @click="likeOrDislikeFn(1)"
          >已点赞</van-button
        >
        <van-button
          v-else
          icon="good-job-o"
          type="danger"
          plain
          size="small"
          @click="likeOrDislikeFn(-1)"
          >点赞</van-button
        >
      </div>
    </div>
    <!-- 文章评论 -->
    <Comment v-if="artObj.art_id" :artId="artObj.art_id" :artObj="artObj" />
  </div>
</template>

<script>
import Comment from "./comment.vue";

import {
  getArticleDetailAPI,
  followAutAPI,
  UnfollowAutAPI,
  likeArtAPI,
  dislikeArtAPI,
} from "@/api/article";
import { Toast } from "vant";
export default {
  name: "ArticleDetail",
  data() {
    return {
      // 文章对象
      artObj: {},
    };
  },
  async created() {
    const resp = await getArticleDetailAPI({
      artId: this.$route.query.art_id,
    });
    this.artObj = resp.data;
  },
  methods: {
    // 关注 no关注
    async followDrunFn(isFollowed) {
      // 1. 关注状态取反 - 操作vue变量
      this.artObj.is_followed = !this.artObj.is_followed;
      // 2. 同步到后台
      try {
        isFollowed
          ? UnfollowAutAPI({
              autId: this.artObj.aut_id,
            })
          : await followAutAPI({
              autId: this.artObj.aut_id,
            });
        Toast.success(isFollowed ? "取关成功" : "关注成功");
      } catch (e) {
        Toast.fail(isFollowed ? "取关失败" : "关注失败");
      }
    },
    // 点赞 no点赞
    async likeOrDislikeFn(attitute) {
      // 1. 点赞状态取反 - 操作vue变量
      this.artObj.attitude = this.artObj.attitude === 1 ? -1 : 1;
      // 2. 同步到后台
      try {
        attitute === 1
          ? await likeArtAPI({
              artId: this.artObj.art_id,
            })
          : dislikeArtAPI({
              artId: this.artObj.art_id,
            });
        Toast.success(attitute === 1 ? "取消点赞成功" : "点赞成功");
      } catch (e) {
        Toast.success(attitute === 1 ? "取消点赞失败" : "点赞失败");
      }
    },
  },
  components: {
    Comment,
  },
};
</script>

<style scoped lang="less">
.article-container {
  padding: 10px;
  margin-top: 46px;
}
.art-title {
  font-size: 16px;
  font-weight: bold;
  margin: 10px 0;
}

.art-content {
  font-size: 12px;
  line-height: 24px;
  width: 100%;
  overflow-x: scroll;
  word-break: break-all;
  /deep/ img {
    width: 100%;
  }
  /deep/ pre {
    white-space: pre-wrap;
    word-wrap: break-word;
  }
}

.van-cell {
  padding: 5px 0;
  &::after {
    display: none;
  }
}

.avatar {
  width: 60px;
  height: 60px;
  border-radius: 50%;
  background-color: #f8f8f8;
  margin-right: 5px;
  border: none;
}

.like-box {
  display: flex;
  justify-content: center;
}
</style>
